larsen



0. C. LARSEN April3, 192s.

VISE

Filed. July 29. 1 s Sheets-Sheet 1.

INVENTOR OLE c. LARSEN BY ATTORNEY 0. C. LARSEN A ril's; 192s.

VISE

Filed July 29. 1927 3 Sheets-Sheet 3 IN E TOR OLE (MARS/5N Y Patented Apr. 3, 1928.

UNITED STATES PATENT OFFICE.

. one c/Lansnn, or MINNEAPOLIS, MINNESOTA.

vrsn.

Application filed July 29, 1927. Serial No. 209,343.

This inventionrelates to Vises, and the primary object is to provide an efiicient, practical and durable construction of vise which is particularly adapted for use by pattern makers, cabinet makers, carpenters, etc. A further object is to provide a novel construction ofvise in which the clamping jaw is movable with respect tothe opposed or stationary jaw by two classes of movements one of which is quick acting, so as to permit a quick setting of the vise jaws into predetermined positions, and the other of wvhich is relatively slow acting so as to permit a more powerful clamping act-ion after the vise has been set in such predetermined position. A further object is to provide a vise in which the jaws are simultaneously adjustable whereby the vise can be adjusted to and operated at any desirable angle, from the normal horizontal position to a vertical position, and in all intermediate positions therebetween. A furtherobject is to provide the vise with an automatic locking mechanism, whereby the movable jaw will be locked against the quick acting adjustment, at all times except when-in its horizontally adjustable position, thereby serving as a safety measureto prevent the talling otthe movable jaw when in any angularly elevated position. These and still further objects will be more fully described and explained in the course of the following specification, reference being. had to the accompanying drawings, wherein Fig. 1 is a side elevationot the vise, showing it. as applied to a workbench, and in its normal horizontal position. In this View a portion of the bar 10 is shown asbroken out, and the handle 11 is shown in section.

Fig; 2 is a plan view oii the vise as shown in Fig. 1, but with the bench and bench plate removed, for purpose of illustration.

Fig. 3 is a sectional elevation about as on the line 3--3 in Fig. 2,but showing the vise in position on a bench. 1 T

Fig. 4 is a sectional elevation on the line 4. 4 in Fig. 3.

Fig. 5 is; asection, similar to Fig. i, but.

the

showing the clamping screw as free for quick acting movement. 1

Fig. 6 is a sectional view as on the line 6-6 inFig. 4, but with some parts in full and other parts broken away.

Fig. 7 is a side elevation of the vise, simi- .lar to 1 but ghowing the visejaws as adjusted. to their vertically operative pOsi tions.

Fig. 8 is an elevation of the vise as seen. from the right in Fig. 7, thus showingthe operating mechanism. as it would be seen when looking up in Fig. 1.

Referring to the drawings more pdlil'lClb larly and by reference characters, A designates the bench upon which the device is to be secured. The vise is rigidly secured to the bench by screws 12 and 13, which respectively secure a bench plate 1 1 and a bracket 15. The plate is is a casting which fits against the front edgeof the bench and is screwed down upon it while the bracket 15 is secured against the under face of the bench at a more rearward point. Pivot-ally secured to the member 1 1, as at 16, is a normally stationary but tiltable vise jaw 17, having an integral rearwardly extending bracket section 18. The sliding or movable jaw, 19, is carried by a pair of bars 20 which are slid- .able in the primary jaw casting 17-18, so

that the twojaws 17 and 19 will always be parallel and so that they may be tilted in unison from thecenter 16. Pivotally secured as at 21 to the bracket portion 18 ot the primary jaw member 17, a casting 22 havingthe rigid, rearwardly extending bar 10 which extends through a split clamping .ringQd. T his ring or collar 24 is pivotally carried, as at 25,by the bracket 15, and has a hand operated clamping handle 26 by which the collar 24 may be tightly gripped over the bar 10. The bar 10 has a collar 23, which, although adjustably secured, is preferably in such a position that it will :stop

against the collar 24 and thus serve to prevent the vise jaws from being swung to a position. lower than thehorizontal as shown in Fig. 1. To secure the vise jaws in any tilted position it is of course only necessary to release the grip ofPA by a turn of the handle,and then again effect the grip after the desired tilt has been determined.

Extending longitudinally between the sup porting bars 20 is a threaded vise operating screw 27, one end of which is rotatably so cured in the jaw 19, and at said end has the transverse operating handle 11, by which manipulation of the movable jaw 19 effected. Thebar 27 is slidable with respect to'and extends throughiholes 28 and 29,01 the members 17 and 18, respectively.

Arranged in the chamber like recess 30,

formed by the aw 17 and the skeleton bracket-18, is a collar 31 and a ring 32 which is secured in a concentric and spaced posltion with respect 'to the collar by bolts 33 and 3st.

The bolt 34 serves as a pivot :tor and carries a pair of threaded, half round clutch members 35 and 36, which, when contracted, engage the screw 27 so that it cannot slide through the holes 28 and 29, but must be screwed or rotated in order to move longitudinally with respect to the jaw 17. Interposed between the rear ends of the clutch member 35 36 and the collar 31' is a guide plate 37, which has a hole large enough to permit tree passage of the screw 27, and which has a recessed end lugBS which slida-bly engages one of the rods 20 to prevent the plate fromrotating, The plate 37 has a pair of arcuate'slots 39 which guide a pair of P111540 of the respective clutch members "35 and 36, and these slots, which are always stationary, are so arranged and directed that when the collar '31 and theparts 32, and 3% are partly rotated in one direction, the movement imparted to the pins l0 will cause the clutch'members to close in and engage the threads of the screw 27, as shown in Figs. 2, 4, 6 and 8,-and, when partly rotated in the reverse direction will cause the clutch membersto spread and thus disengage the screw 27.

The oscillating movements of the collar 31 are produced by reverse-rotating movements of the screwl27, which, as stated,is controlled by theoperator who manipulates the handle I 11, and in order that the collar 31 will properly respond to such movements, I provide it with a friction block 41 which is held in frictional contact with the screw 27 by a suitablespring 42 (see Fig.

When the clutch'is open, as shown in Fig. 5, the screw 27 is entirely disengaged and the jaw 19 is free to be moved quickly into any desired position. This is of course a very desirable condition when the vise is operated inahorizontal direction, but it is notdesirable, and is in fact a dangerous condition to contend with when the vise is operatedin an angular position, or in a vertical direction, as in Fig. 7, in view of the fact that the movable jaw would be free to drop down and possibly crush the work piece or the hands of the operator, between the two jaws. To eliminate this danger and yet per,- mit' the vise to be conveniently operated at any angle, I provide a safety appliance which may be described as follows:

lidably secured in the skeleton "frame 18,

and transversely thereof, is a rod 43whicl1 is held endwise in contact with a cam face on the inner side of the member 22, by a 7 spring 44 (see Figs; '2 to 6 and 8). Rigidly secured upon the rod 43 is a stop collar 45. When the vise is horizontal, the member 22 is in such-a position with respect to 17-18 d3, thus moving the stop collar l5 transversely inward, into the path 01 normal travel of :1 lug 46 carried by the collar 31. And when the members 4-5 and in contact the collar 31 cannot be rota ted with the screw 27 in the initial. movement which would otherwise cause a disengagement of the clutch. It will therefore be noted that whenthe vise is tilted the jaw 19 will be locked against the quick acting movement, although there is nothing to prevent the slow and more powerful movement which results from the screwing in of the screw 27.

The clutch is of course normally engaged most of the time when the vise is horizontal, and is positively locked in engagement at all times when the vise is tilted. To obtain the quick acting adjustment, when the vise is horizontal, it is only necessary to give the handle 11 a short anti-clockwise motion. This will impart a similar movement to the collar 31, and thus open the clutch. After the jaw 19 has been pushed or pulled to the desired position, a short reverse or clockwise movement of the handle 11 will close the ping the larger or smaller object.

It is understood that sijiitable niodilicatimis may be made'in the general design and structural details of the invention as hcrciu shown, provided, however, that said modifications come within the spirit and scope of the appended. claims. Having now there fore i'ully shown and described my invention, what I claim to be new and desire to protect by Letters Patent is:

1. A. vise comprising a bench plate, a pair of jaws tiltably mounted thereon, a screw for clamping said jaws toward each other, means for releasing the screw when the vise jaws are relatively movable in a horizontal direction, and means for automatically rendering the releasing means inoperative when the jaws are tilted.

2. A vise comprising a pair of jaws, means for mounting the vise whereby it may he tilted with respect to a bench upon which it is mounted, means for imparting a. slow acting movement to one of the jaws with respect to the other, means for releasing the slow acting means to permit a relatively quick act ing movement to the movable jaw, said rcleasmg means being operative only when the movable jaw is operated in a substantially horizontal plane.

3; A vise comprising a pair of awe, means for mounting the vise whereby it may be lit) ill)

ona-17o ing movement to one of the jaws with respect to the other, meansfor releasing the slow acting means to permit a relatively quick acting movement to the movable jaw, and means for automatically rendering the releasing means inoperative upon tilting of the vise away from a horizontal operating position.

4. A vise comprising a pair of jaws, means for mounting the vise whereby it may be tilted with respect to a bench upon which it is mounted, means for imparting a slow acting movement to one of the jaws with. respect to the other, means for releasing the slow acting means to permit a relatively quick acting movement to the movable jaw, said releasing means being operative only when the movable jaw is operated in a substantially horizontal plane, and means for actuating the releasing means bya. backward movement of the slow acting means.

5. A bench vise comprising a primary jaw which is tiltable with respect to the bench, a second jaw movable in parallelism with the primary jaw, a screw for operating the sec ond jaw, means associated with the screw for effectively disconnecting it with respect to the primary jaw to permit a quick adjustment of the second jaw, and means operated by tilting the primary jaw for rendering said disconnecting means inoperative.

6. A vise comprising a pair of jaws, means for mounting the vise whereby it may be tilted with respect to a bench upon which it is mounted, means for adjustably securing the jaws in tiltably adjusted positions, a screw for clamping one jaw toward the other, means for releasing the screw to permit a quick adjustment of the jaws with respect to each other, and means actuated by screw for clamping one jaw toward the other,

means for releasing the screw to permit a quick adjustment of the jaws with respect to each other, and meansactuated by tilting the jaws away from their normal horizontally operating positions for rendering the screw releasing means inoperative, said means for rendering the screw releasing means inoperative being operatively connected with said securing means.

8. A vise comprising a bench plate, a frame member having a primary jaw and tiltably secured to the plate, a second jaw mounted to move in parallelism with the primary aw, means for adjustably securing the jaws in tiltably adjusted positions, a screw for operating the second jaw and extending into the frame of the primary jaw, a collar and a pair of pivoted threaded members arranged upon the screw within said frame, a plate interposed between the collar and said members, and operative connections between said plate and said members whereby a retrograde movement of the screw will cause the threaded members to disengage the screw, and means operatively associated with the securing means for preventing the disengagement of the threaded members from the screw when the vise istilted from its normal horizontal operating position.

In testimony whereof I affix my signature.

OLE C. LARSEN. 

